MovinCool Office Pro W20 Service Manual - Manual (Page 51)

Repair Section
51
9.11 Inspection of Refrigeration System
• In most cases, the probable cause for insufficient cooling is a clog in the system, a leakage or
an incorrect amount of refrigerant. In such cases, inspect the system according to the following
procedure.
(1) Clogged refrigeration system
• Check the component parts of the refrigeration system, including piping, that could be clogged
with refrigerant. If clogged with refrigerant, only the clogged part is partially frosted. If this occurs,
change the part in question.
(2) Refrigerant leak
• Carefully check all connections, and each component for leaks whenever the refrigeration
system is installed or repaired. Use an electronic gas leak tester to inspect the system.
(3) Insufficient refrigerant
• When the unit is not producing sufficient cooling, follow the troubleshooting chart on page 43 to
confirm the cause of the problem. Then, charge the system with the refrigerant to the specified
amount as indicated on page 74.